Resonant production of the sterile neutrino dark matter and fine-tunings in the neutrino minimal standard model

Journal Article · Wed Sep 01 00:00:00 EDT 2010 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.82.056014· OSTI ID:21421093

Roy, Ananda ^[1]; Shaposhnikov, Mikhail ^[2]

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1. Indian Institute of Technology Kanpur, Kanpur, Uttar Pradesh 208016 (India)
2. Institut de Theorie des Phenomenes Physiques, EPFL, CH-1015 Lausanne (Switzerland)

The generation of lepton asymmetry below the electroweak scale has a considerable impact on production of dark matter sterile neutrinos. Oscillations or decays of the heavier sterile neutrinos in the neutrino minimal standard model can give rise to the requisite lepton asymmetry, provided the masses of the heavier neutrinos are sufficiently degenerate. We study the renormalization group evolution of the mass difference of these singlet fermions to understand the degree of necessary fine-tuning. We construct an example of the model that can lead to a technically natural realization of this low-energy degeneracy.

• OSTI ID: 21421093
• Journal Information: Physical Review. D, Particles Fields, Vol. 82, Issue 5; Other Information: DOI: 10.1103/PhysRevD.82.056014; (c) 2010 American Institute of Physics; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ASYMMETRY
MASS
MASS DIFFERENCE
NEUTRINO OSCILLATION
NEUTRINOS
NONLUMINOUS MATTER
PARTICLE DECAY
RENORMALIZATION
STANDARD MODEL
WEINBERG-SALAM GAUGE MODEL
DECAY
ELEMENTARY PARTICLES
FERMIONS
FIELD THEORIES
GRAND UNIFIED THEORY
LEPTONS
MASSLESS PARTICLES
MATHEMATICAL MODELS
MATTER
PARTICLE MODELS
PARTICLE PROPERTIES
QUANTUM FIELD THEORY
UNIFIED GAUGE MODELS
UNIFIED-FIELD THEORIES